Crumb sweeper



W. AISENSTEIN CRUMB SWEEPER Filed Oct. l, 1920 Patented .lilly I7, i923. i

WILLIAM AIsNNsrnIN, or CHICAGO, ILLrNoIs, assIGNon fro wILivIonr NANUFACTUN- i ING COMPANY, or sindaco, ILLINoIs, a CORPORATION or ILLINOIS.

CRUI/IB SWEEPER.

To all whom t may cof/wem: i y

i Be it known that I, l/"VILLIAIJ AIsnNsTnIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful ImprovementsinCrumb Sweepers, of which the following isa specification.

My invention relates to crumb sweepers and has particular reference to a type of l0 crumb sweeperwherein a rotary table brush is'mounted within a case having a longitudinally extending opening in the bottom thereof, andvhaving troughs or crumb receptacles on each side of said brush adjacent the said opening, the rotatable brush being mounted directly upon traction wheels instead of being connected to the traction wheels by means of the usual gears, and thus dispensing with the usual gears `for driving the brush in sweepers ofthis type.

Another and further object of my inven# tion is the provision of a crumb sweeper in which the brush rotates in the same direction as the travel of the crumb sweeper. In other words, when the crumb sweeper is pushed forward the brush rotates forward and `when it is pulled backwards across the surface of the table the brush rotates backwards so that the crumbs are more easily picked up by the brush and deposited in the receptacles provided in the casing, i i

Another and further object of my invention is the provision of acrumb sweeper which tilts slightly in operation upon the traction wheels so that as lthe sweeper is pushed forward the back portion of the casy ing, and particularly the marginal edge of the longitudinal opening, `moves along in close contact with the top surface of the table cloth while the forward portion of the casing is raised upward a' slight distance from the table cloth, thus allowing forgthe crumbs to pass under this portion of the casing where they canbe readily picked up under.,

Another object of `my invention is the proand can also be taken out and cleaned and which is simple and efficient in operation.

l These and other objects of ymy invention will be further and better understood by reference to the accompanying sheets of drawings, and in which:

Figure 1 is a top plan view of my improvedsweeper partially in section and partially in elevation;and l Figure 2 is a cross-sectional view of the sweeper shownzin Figure 1. i l f Referring now specificallyto the drawings, and in which like reference characters refer to likeparts throughout, 10 is the `vision of a crumb sweeper having a removable brush so that the brush can be renewed i crumb sweeper casing to which a handle `11 is securedin any approved manner. The casing 10 comprises a front arcuate side wall 12 and a rear arcuate side wall 13 integral with said` casing and end walls 14 Aand 15 formed integrally with the said side walls 12 and 18.y Extending longitudinally of the casing 10 at the bottom thereof is an opening'15a within `which a rotatable brush 16 is mounted, the said brush having an .axle y17 extending therethrough andhaving its ends projecting outward and to which is secured traction wheels 18 and 19 located on each side of the crumb sweeper and adjacent the end walls thereof and within said longitudinal opening formed in the casing. The tracand into the hub portions 21 of'each of the traction wheels 18 and 19, so that the tracy 0 tion wheels 18 and 19 will rotate freely upon the ends of the screws 23 and 211. i The screws` 23 and 24 maybe readily removed from the casing at any time so that theibrush can be removed fromthe casing and replaced by a' new brush or for purposes of .cleaning the brush if it is desired. Extending longitudi` nally of the casing 10 and immediately adjacent thelongitudinal opening 15a `on each `side thereof is a pair of integrally formed walls 25 and 26, the said walls being slightly `inclined so that the crumbs which are picked up by the brush 16 will be easily carried over the tops of the walls and ydeposited in kio troughs 27 and 28 in the casing 10. A` spring cover 29 is'piovided which clamps onto the upper marginal ,edges 30 and 31 of the walls I12 and 13 of the casing 10 so that the receptacles ,inside ot the casing 10 are kept closed-at all times while the device is in operation.A The cover 29 can be easily removed for the purpose of emptying crumbs out of the receptacles 27 and 28. The lower marginal edges ot the traction wheels 18 and 19 extends slightly below the walls 27 and 28 atfthe marginal edges of the longitudinal opening 15a, so that when the sweeper is placed upon the table there is a slight tilting or rocking action .ofthe device. As the crumb sweeper is pushed forward the marginal edge 32 of the wall 13 will be in contact with the surface over ywhich the crumb sweeper is being movedv while the vforward edge of the wall 12 will bel elevated slightly so that the crumbs can readily pass through under this wall and be picked up by the brush 16. Vhen the crumb sweeper is moved backwards the reverse operation will'take place, the marginal edge 33 of the wall 12 will come in contact with the surface over which the sweeper is being passed vand the edge 32 will be elevated slightlyto allow this edge of the receptacle `to pass overthe crumbs andy soft particles-o `food spread upon'the table cloth will not -oe smoothed out or imbedded into the table cloth. The operation 'of the devicev is exceedingly simple, as by grasping the handle the operator moves the sweeper backwardsand forward over the surface to be cleaned, the ybrushv 16 will be rotated in the direction in which thesweeper is moving so that crumbs and other particles of food upon the table will be readily picked up and lodged inthe receptacles on each side 'of the brush. 1 i `dlVhile l have described more or less precisely the details of construction, lI donot wish .to beA understood as limiting myself thereto, as I'contemplate changes in form andthe proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing fromithe spirit or scope of my invention.

yIclaiin:v

1. In" combination, a crumb sweeper for picking up crumbs and the like from tableclothsand delicate fabrics, comprising acasingfhaving side and end walls,- a transverse brushfopening in the bottom of the s-weeper,

flanges projecting .upwardly from the edges of said-brush'opening forming crumb compartm'ents-to either side of said brush-opening, a vfbrusli rotatablymounted in said opening, two traction wheels, one at each end of said brush, a shaft for said brush, the ends of said shaft being rigidly secured directly to said traction wheels, pivot memv bers projecting through the end walls 'of said casingy and aii'ording bearing support for said traction wheels directly inside of said end walls, said traction wheels constituting the sole ypoints of support in the normal operation o'f the sweeper whereby the sweeper may be inclined forwardly lor backwardlvyto depress either edge of said brush opening down into contact with the tablecloth, and correspondingly raise'the other edgeofsaid brush opening above the tablecloth, thelanges at the edges of said brush opening `,being rigidly held against vertical movementduring operation of the sweeper, and afshort 'handle rigidly secured to `said casing and projecting diagonally upwardly there-from. 2. In a crumb- -sweeper for picking up crumbs and the like from tablecloths and delicate fabrics, the combination of anopen topped pan constructed as a unitary casting, said pan having side and end walls, a brush opening in the center of the bottom of'said pan, flanges formed integral with said pan and extending diagonally upwardly 4from said brush opening along .the `front and rear edges thereof,la brush insaid 'opening having a twisted wire shaft with thebristles bound'between the wires, la pair of traction wheels, one at eachvend of said brush, said brushshaft having its ends rigidly secured in sockets in saidwheels, the bristles in -said brush being of slightly greaterradi-al length than said traction wheels, screws lthreading' throughjthe end walls of said casingv and talking into sockets in said traction wheels :tor affording removable bearings for said traction wheels, said two traction wheels'constituting the sole points of support in Jrthe normal operation of the sweeper, `whereby( Jthe sweeper may be inclined `orwardly or backwardly to depress either lipl edge of said brush 4opening lower than the corresponding lip edge of the other side of said opening', a separatefsheet metal cover' extendingover the top of said open topped pan, the crumbs being' adapted toV be thrown outv 'of saidrpan through the opening covered and uncovered` byfsaid sheet metal cover, said pan being formed with an Venlargement `on one side having a diagonal screw threaded socket and ai shorthandle tapping into `said socket for pushing and incliningsaidsweeper.

Signed at Chicago, Illinois, this y2'9tly1lfday of September,i1920. l

i WILLIAM allseits;:msi-N.` 

